JP6430664B2 - ガス供給装置 - Google Patents
ガス供給装置 Download PDFInfo
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- JP6430664B2 JP6430664B2 JP2017559971A JP2017559971A JP6430664B2 JP 6430664 B2 JP6430664 B2 JP 6430664B2 JP 2017559971 A JP2017559971 A JP 2017559971A JP 2017559971 A JP2017559971 A JP 2017559971A JP 6430664 B2 JP6430664 B2 JP 6430664B2
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- gas
- gas supply
- supply device
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- 239000007789 gas Substances 0.000 claims description 384
- 238000003860 storage Methods 0.000 claims description 44
- 239000000758 substrate Substances 0.000 claims description 25
- 239000000463 material Substances 0.000 claims description 8
- 230000004888 barrier function Effects 0.000 claims description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 7
- 239000002243 precursor Substances 0.000 claims description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 4
- 239000010453 quartz Substances 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 claims description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 239000011737 fluorine Substances 0.000 claims description 3
- 229910052731 fluorine Inorganic materials 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 239000000470 constituent Substances 0.000 claims description 2
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 claims 1
- 239000010408 film Substances 0.000 description 71
- 238000005755 formation reaction Methods 0.000 description 38
- 230000015572 biosynthetic process Effects 0.000 description 37
- 230000000694 effects Effects 0.000 description 25
- 238000000034 method Methods 0.000 description 20
- 238000000231 atomic layer deposition Methods 0.000 description 18
- 208000028659 discharge Diseases 0.000 description 18
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- 239000010409 thin film Substances 0.000 description 11
- 238000006243 chemical reaction Methods 0.000 description 9
- 238000005268 plasma chemical vapour deposition Methods 0.000 description 9
- 238000005229 chemical vapour deposition Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000004065 semiconductor Substances 0.000 description 6
- 238000004140 cleaning Methods 0.000 description 5
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- 230000009257 reactivity Effects 0.000 description 5
- 238000002230 thermal chemical vapour deposition Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 238000011282 treatment Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 150000004767 nitrides Chemical class 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000009751 slip forming Methods 0.000 description 2
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- 230000005653 Brownian motion process Effects 0.000 description 1
- YZCKVEUIGOORGS-IGMARMGPSA-N Protium Chemical compound [1H] YZCKVEUIGOORGS-IGMARMGPSA-N 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 238000005537 brownian motion Methods 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000005137 deposition process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000005121 nitriding Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000012495 reaction gas Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 230000003685 thermal hair damage Effects 0.000 description 1
- 238000007736 thin film deposition technique Methods 0.000 description 1
- 238000000427 thin-film deposition Methods 0.000 description 1
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- H—ELECTRICITY
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- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/67005—Apparatus not specifically provided for elsewhere
- H01L21/67011—Apparatus for manufacture or treatment
- H01L21/67017—Apparatus for fluid treatment
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- C—CHEMISTRY; METALLURGY
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- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
- C23C16/455—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating characterised by the method used for introducing gases into reaction chamber or for modifying gas flows in reaction chamber
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- C23C16/4557—Heated nozzles
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- C—CHEMISTRY; METALLURGY
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- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
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- C23C16/448—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating characterised by the method used for generating reactive gas streams, e.g. by evaporation or sublimation of precursor materials
- C23C16/452—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating characterised by the method used for generating reactive gas streams, e.g. by evaporation or sublimation of precursor materials by activating reactive gas streams before their introduction into the reaction chamber, e.g. by ionisation or addition of reactive species
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- C—CHEMISTRY; METALLURGY
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- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
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- C23C16/455—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating characterised by the method used for introducing gases into reaction chamber or for modifying gas flows in reaction chamber
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- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
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- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
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- C23C16/455—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating characterised by the method used for introducing gases into reaction chamber or for modifying gas flows in reaction chamber
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- C23C16/45544—Atomic layer deposition [ALD] characterized by the apparatus
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- C—CHEMISTRY; METALLURGY
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- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
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- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/31—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to form insulating layers thereon, e.g. for masking or by using photolithographic techniques; After treatment of these layers; Selection of materials for these layers
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Description
図1はこの発明の実施の形態1であるガス供給装置の構成を示す説明図である。図1において、XYZ直交座標系を示している。
図7はノズル部10を有する実施の形態1のガス供給装置を用いたガス噴流の速度状態を模式的に示す説明図である。
図13は第一段制限筒13のみからなるノズル部を有する従来のガス供給装置を用いた場合のマッハディスク発生構造を模式的に示す説明図である。
実施の形態1のガス供給装置のガス噴出器1は、ノズル部10に設けられた径r1の開口部を有する第一段制限筒13により、低真空処理チャンバー18に噴出する原料ガスG1に指向性を持たせることができるため、マッハを超える超高速で、ガスを処理対象基板であるウエハー25に供給することができる。この際、第一段制限筒13と低真空処理チャンバー18との間に設けた第二段制限筒14の存在により、噴出した原料ガスG1が超高速化することに伴う衝撃圧力、及び、温度によって、極端に減速するというマッハディスクMDの発生を効果的抑制することができる。
図2はこの発明の実施の形態2であるガス供給装置の構成を示す説明図である。図2において、XYZ直交座標系を示している。
図3はこの発明の実施の形態3であるガス供給装置の構成を示す説明図である。図3において、XYZ直交座標系を示している。
図4及び図5はこの発明の実施の形態4であるガス供給装置の構成を示す説明図である。図4は断面図であり図5は斜視図である。図4及び図5それぞれにおいて、XYZ直交座標系を示している。
図6はこの発明の実施の形態5であるガス供給装置の構成を示す説明図である。図6において、XYZ直交座標系を示している。
なお、上述した実施の形態では、制限筒の個数を最大3段構成(実施の形態2)のものを示したが、例えば、実施の形態2の第三段制限筒15の下方にさらに第四段制限筒を設ける等、4段以上の制限筒を設ける構成も勿論考えられる。
11,110 一次収容室
12 ガス供給口
13,13a〜13d,13X 第一段制限筒
14,14a〜14d,14X 第二段制限筒
15 第三段制限筒
17 半球状制限筒
18,180 低真空処理チャンバー
19 載置台
22 上部電極
24 下部電極
25 ウエハー
Claims (14)
- 処理対象基板(25)を載置する載置部(19)と、
前記載置部の上方に設けられ、底面に開口部を有する処理チャンバー(18,180)から前記処理対象基板にガスを供給するガス噴出器(1〜4,100)とを備え、
前記ガス噴出器は、
ガス供給口(12)から供給されるガスを一時的に収容する一次収容室(11,110)と、
前記処理チャンバーと、
前記一次収容室と前記処理チャンバーとの間に設けられるノズル部(10,20,30,40,10a〜10d)とを備え、
前記ノズル部は、
前記ノズル部の最上部に設けられ、平面視した開口部断面形状が第1の径で円状に形成され、前記一次収容室内のガスを下方に供給する第1の制限筒(13,13X)と、
前記第1の制限筒と連続的に形成され、平面視した開口部断面形状が第2の径で円状に形成され、前記第1の制限筒から供給されるガスを前記処理チャンバーに向けて供給する第2の制限筒(14,14X,17)とを有し、
前記第1の径は、前記一次収容室内と前記処理チャンバー内との圧力差が所定圧力比以上になるように設定され、
前記第2の径は前記第1の径より長くなるように設定され、
前記ノズル部(20)は、
前記第2の制限筒と連続的に形成され、平面視した開口部断面形状が第3の径の円状に形成され、前記第2の制限筒から供給されるガスを前記処理チャンバーに向けて供給する第3の制限筒(15)をさらに含み、
前記第3の径は前記第2の径より長いことを特徴とする、
ガス供給装置。 - 請求項1記載のガス供給装置であって、
前記所定圧力比は30倍であり、
前記一次収容室内の圧力と、前記処理チャンバー内の圧力との圧力差を30倍以上にするようにしたことを特徴とする、
ガス供給装置。 - 請求項1または請求項2に記載のガス供給装置であって、
前記第2の制限筒の前記第2の径を直径30mm以内に設定したことを特徴とする、
ガス供給装置。 - 請求項1から請求項3のうち、いずれか1項に記載のガス供給装置であって、
前記ノズル部(30)における前記第2の制限筒(17)は、
前記処理チャンバーに向かうに従い前記第2の径が長くなるように半球状に形成されることを特徴とする、
ガス供給装置。 - 請求項1から請求項4のうち、いずれか1項に記載のガス供給装置であって、
前記ガス噴出器のうち、ガスと接触する領域であるガス接触領域を石英あるいはアルミナ材を構成材料として形成したことを特徴とする、
ガス供給装置。 - 請求項1から請求項5のうち、いずれか1項に記載のガス供給装置であって、
前記ガス噴出器を100℃以上に加熱することで、加熱したガスを前記処理対象基板に供給するようにしたことを特徴とする、
ガス供給装置。 - 請求項1から請求項6のうち、いずれか1項に記載のガス供給装置であって、
前記ガス供給口から供給されるガスは、窒素、酸素、フッ素、及び水素のうち少なくとも一つを含有したガスである、
ガス供給装置。 - 請求項1から請求項6のうち、いずれか1項に記載のガス供給装置であって、
前記ガス供給口から供給されるガスは、前駆体ガスである、
ガス供給装置。 - 請求項1から請求項8のうち、いずれか1項に記載のガス供給装置であって、
前記一次収容室内の圧力を大気圧以下、10kPa以上の圧力に設定するように、前記ガス供給口から供給されるガスのガス流量を制御する、
ガス供給装置。 - 請求項1から請求項9のうち、いずれか1項に記載のガス供給装置であって、
前記ノズル部は、
複数のノズル部を含む、
ガス供給装置。 - 請求項10記載のガス供給装置であって、
複数のノズル部それぞれにおける前記第1の制限筒の前記第1の径を、前記複数のノズル部間で異なる値に設定したことを特徴とする、
ガス供給装置。 - 請求項1から請求項9のうち、いずれか1項に記載のガス供給装置であって、
前記一次収容室と前記ノズル部との境界領域近傍に、前記ガス供給口から供給されたガスを電離させ、イオン化あるいはラジカル化させてイオン化ガスあるいはラジカル化ガスを得るガス電離部(22,24)を設けたことを特徴とする、
ガス供給装置。 - 請求項12記載のガス供給装置であって、
前記ガス電離部は、
互いに対向して設けられ第1及び第2の電極(22及び24)を有し、前記第1の電極と前記第2の電極との間に放電空間を有し、前記第1及び第2の電極のうち少なくとも一方が前記放電空間を形成する面に誘電体を有し、
前記第1の制限筒は、前記第2の電極に形成される貫通口によって形成され、
前記第1及び第2の電極間に交流電圧を印加し、前記放電空間において誘電体バリア放電を発生させて得られる前記イオン化ガスあるいは前記ラジカル化ガスを前記処理チャンバー内に供給する、
ガス供給装置。 - 請求項12または請求項13に記載のガス供給装置であって、
前記ノズル部は、複数のノズル部を含み、
前記ガス電離部は、前記複数のノズル部に対応して設けられる複数のガス電離部を含み、前記複数のガス電離部は互いに独立して制御可能であることを特徴とする、
ガス供給装置。
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